Try adding 
use strict;
use warnings;

[download]

at the top of your program. They'll point out many errors in your program.

Update:

$atob is -2.5
$btoc is -0.5
$atoc is -3

That's why the first elsif isn't executed: $btoc > 1 || $btoc < -1 is false.

In reply to Re: if logic OR parentheses problem by FunkyMonk
in thread if logic OR parentheses problem by Ellhar

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